Before we get into it, I would like to point out that I do not believe in any religion. Also, do not try to convince me of your religious views but rather try to walk through the following idea with logic. Enough with the disclaimers, let's move on.
What is the purpose to life?
I firmly believe there is no purpose to life. Why? Because there is absolutely nothing that is permanent. Once you are dead, everything you have achieved, attained, aspired for, etc. is all meaningless. Even if you are the greatest human alive and cured world hunger, brought world peace, and forever go down in history, your life is still temporary. In fact, the lives of everyone you helped change is also temporary and, therefore, puproseless. Everything you do is without purpose. Even the pursuit of knowledge. Why pursue knowledge when you will eventually die and all that you have sought is meaningless? Even the greatest scientists such as Newton, Einstein, whatever have helped humans realize the functions of the world, yes. But they are dead now and everyone who learns and expands on their studies will also die. In fact, our time is so limited in this universe that it won't even matter that they have made such contribution in the vast scheme of the universal "cycle" (if you will). Why do you live for? Everything is so temporary. You can love, be happy, be rich, travel the world, etc but you will eventually die and all that you have done is pointless and meaningless.
Some say to make your own purpose in life. But if life is purposeless in the first place, the so called purpose you have made for a purposeless idea is pretty purposeless in itself (in other words the purpose you made for life isn't very helpful if you are going to be dead in the end).
tl;dr there's no fucking point.